Use the empirical rule. the mean speed of a sample of vehicles along a stretch of highway is 70 miles per hour, with a standard deviation of 4 miles per hour. estimate the percent of vehicles whose speeds are between 66 miles per hour and 74 miles per hour. (assume the data set has a bell-shaped distribution.)

false.

explanation:

this statement is false. after falling for 5 seconds, its speed will not be 100 m/s.

no. bullets are macro objects. wave nature is for light waves, extremely tiny particles. if a light particle was the size of your finger, the bullet would be the size of the universe. so basically, that huge difference in size makes the wave nature of matter insignificant.

no

explanation:

no i dont know how to solve this you should probably try to google the answer

the doppler effect is used by weather forecasters to measure 

moving clouds